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A No. Question

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newweldeng09

newweldeng09

Mechanical
Oct 31, 2008
84
What do the dashes mean in QW-442? Can additions of Ni, Mo, and Cr be added to A No. 1 filler metal and still meet this classification if it does not meet other classifications?
 
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The dots mean not specified. Look at SA 751 for understanding nomenclature related to chemical analysis.
 
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